.topnav{
    height: 40px;
    width: 100%;
    background-color: #333;
    color: #b0b0b0;
}
.topnav-menu{
    line-height: 40px;

}
.topnav-menu li a{
    padding:0 7px;
    border-right: 2px solid #424242;
}
.topnav-menu li:first-child a{
    padding-left: 0;
}
.topnav-menu li:last-child a{
    border: none;
}
.topnav-menu a:hover{
    color: #fff;
}


/* car */
.topnav-car{
    width: 120px;
    height: 40px;
    background-color: #424242;
    position: relative;
}
.topnav-car a{
    width: 100%;
    height: 100%;
    display: block;
    text-align: center;
    line-height: 40px;
}
.topnav-car a i{
    margin-right: 3px;
}
.topnav-car .car-detail{
    width: 320px;
    height: 100px;
    position: absolute;
    background-color: #fff;
    right: 0;
    top: 40px;
    text-align: center;
    line-height: 100px;
    border: 1px solid #ccc;
    border-top: none;
    display: none;
    z-index: 50;
}
.topnav-car:hover{
    background-color: #fff;
    /* color: #ff6700; */

}
.topnav-car:hover a{
    color: #ff6700;

}
.topnav-car:hover .car-detail{
    background-color: #fff;
    display: block;
    
}